H.S, Merry, 		Raharto, Sugeng, AND 		Agustina, Titin.
" PROSPEK PENGEMBANGAN KOMODITAS KOPI ROBUSTA DI PT. KALIPUTIH KECAMATAN LEDOKOMBO KABUPATEN JEMBER" <em>JSEP (Journal of Social and Agricultural Economics)</em> [Online], Volume 8 Number 2 (20 July 2015)